# Air Plan Approval; Indiana; Sulfur Dioxide
> **Rule** · Final rule. · Published 2024-09-16 · Effective 2024-10-16 · 89 FR 75502
## Document
- **Document number:** 2024-20856
- **Category:** other
- **Federal Register citation:** 89 FR 75502
- **CFR reference:** 40 CFR 52
- **Publication date:** 2024-09-16
- **Effective date:** 2024-10-16
- **State:** IN
- **EPA docket:** EPA-R05-OAR-2023-0481
## Abstract

The Environmental Protection Agency (EPA) is approving a revision to the monitoring and compliance requirements for certain process heater stacks at Safety-Kleen Oil Recovery Company in Lake County, Indiana (Safety-Kleen). EPA is also approving small language clarifications and equipment listing revisions for Safety-Kleen in the Indiana SIP for sulfur dioxide (SO<INF>2</INF>). EPA proposed to approve this action on June 24, 2024, and received no adverse comments.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2024/09/16/2024-20856/air-plan-approval-indiana-sulfur-dioxide)
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